人造刚玉
参考答案:20(28181000)
After that he knew he could _____ any emergency by doing what he could to the best of his ability. [ ]
A. get away with
B. get on with
C. get through
D. get across
生活饮用水标准《GB5749-85》规定,水中铁的含量不超过()mg/L。
A、0.7
B、0.6
C、0.5
D、0.3